C# XML serialize/deserialize

XmlExtensions.cs

    public static class XmlExtensions
    {
        static public string GetAttrValue(
            this XmlNode node, 
            string AttrName)
        {
            try
            {
                return node.Attributes[AttrName].Value;
            }
            catch (Exception)
            {
                return null;
            }
        }

        public static bool SerializeToXmlFile(
            this object obj,
            string FileName,
            out string ExMessage)
        {
            try
            {
                using (TextWriter writer = new StreamWriter(FileName))
                {
                    XmlSerializer ser = new XmlSerializer(obj.GetType());
                    ser.Serialize(writer, obj);
                }
                ExMessage = null;
                return true;
            }
            catch (Exception ex)
            {
                ExMessage = ex.ToString();
                Debug.WriteLine(
                    string.Format("SerializeToXmlFile failed to serialize {0} of the type {1}.\n" +
                                  "Exception: {2}",
                                FileName,
                                obj.GetType().Name,
                                ExMessage));
                return false;
            }
        }

        public static bool SerializeToXmlFile(
            this object obj,
            string FileName)
        {
            string ExMessage;
            return obj.SerializeToXmlFile(FileName, out ExMessage);
        }

        public static T DeserializeFromXmlFile<T>(
            string FileName,
            out string ExMessage) where T : class
        {
            try
            {
                using (TextReader reader = new StreamReader(FileName))
                {
                    ExMessage = null;
                    XmlSerializer ser = new XmlSerializer(typeof(T));
                    return ser.Deserialize(reader) as T;
                }
            }
            catch (Exception ex)
            {
                ExMessage = ex.ToString();
                Debug.WriteLine(
                    string.Format("DeserializeFromFile failed to deserialize {0} of the type {1}.\n" +
                                  "Exception: {2}",
                                FileName,
                                typeof(T).Name,
                                ExMessage));
                return default(T);
            }
        }

        public static T DeserializeFromXmlFile<T>(string FileName) where T : class
        {
            string ExMessage;
            return DeserializeFromXmlFile<T>(FileName, out ExMessage);
        }

    }